例如我有数据在表中找到低于字符串与存储在数据库中的数据的显示顺序
TABEL顺序
-----------------------------------------
id_order no_order order_date
-----------------------------------------
1 0000001 12-01-2013
2 0000002 15-01-2013
-----------------------------------------
TABEL item_order
--------------------------------------------------
id_item_order id_order order_name
--------------------------------------------------
1 2 Product 1
2 2 Product 2
3 2 Product 3
4 2 Product 4
--------------------------------------------------
然后我想要显示来自数据库的数据加入如下
--------------------------------------------------
id_item_order order_name no_order
--------------------------------------------------
1 Product 1 0000002 A
2 Product 2 0000002 B
3 Product 3 0000002 C
4 Product 4 0000002 D
--------------------------------------------------
如何根据与item_order与id_order按照表格顺序关联的数据量显示位于no_order后面的字符“A - n”?
请帮帮我。谢谢
你用什么RDBMS ? – valex
@valex:Oracle,你能帮我吗 – ramadani
'A'..'D'代表什么? –